Question

由于某些原因，当我尝试创建一个将id，name和idno插入mysql数据库的Web服务时，下面的代码不会执行。我添加了MYSQL JDBC驱动程序 - MYSQL连接器库，但是我收到此错误“严重：java.sql.SQLException：没有为jdbc找到合适的驱动程序：mysql：// localhost：3306 / web”。我已经通过了一些人的答案，但似乎没有得到答案。可能是什么原因？任何人吗？

package com.database.www;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;

@WebService(serviceName = "database")
public class database {


    @WebMethod(operationName = "hello")
    public void hello(@WebParam() int id, String name, String idno ) {

        try (

                Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/web", "root", "");
                Statement stm = conn.createStatement();) {



            String insert = "INSERT INTO `web` " + "VALUES ("+id+", '"+name+"','"+idno+"' )";
            int exc = stm.executeUpdate(insert);
            System.out.println("The SQL Command is: " + insert);
            System.out.println("Inserted Successfullly!");
        }
     catch (SQLException e){
         e.printStackTrace();
     }



    }
}

Answer 1

我刚刚加入了Class.forName("com.mysql.jdbc.Driver");，但它确实有效。

package com.database.www;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;


@WebService(serviceName = "database")
public class database {


    @WebMethod(operationName = "hello")
    public void hello(@WebParam() int id, String name, String idno ) throws ClassNotFoundException {

         Class.forName("com.mysql.jdbc.Driver");

        try (

                Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/web", "root", "");
                Statement stm = conn.createStatement();) {



            String insert = "INSERT INTO `web` " + "VALUES ("+id+", '"+name+"','"+idno+"' )";
            int exc = stm.executeUpdate(insert);
            System.out.println("The SQL Command is: " + insert);
            System.out.println("Inserted Successfullly!");
        }
     catch (SQLException e){
         e.printStackTrace();
     }



    }
}

java.sql.SQLException：找不到适合jdbc：mysql的驱动程序

1 个答案: